Geometric model of diurnal and annual variation of keV electron region crossings on highly eccentric Earth orbits

Details Geometric model of diurnal and annual variation of keV electron region crossings on highly eccentric Earth orbits Geometric model of diurnal and annual variation of keV electron region crossings on highly eccentric Earth orbits

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jastp..64..721r&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 64, Issue 5-6, p. 721-728.

Physics

Scientific paper

As an example of tools required for assessing space-weather phenomena for spacecraft interactions, a simple and efficient geometric model of the large-scale near-Earth magnetospheric region where electrons with typical energy of the order of /1-10keV are encountered is developed. This model is based on previously published statistical models of the neutral sheet and the plasma sheet and on a simple dipolar model of the near-Earth region where plasma sheet and inverted ``V'' electron precipitations are observed. It takes into account the seasonal and diurnal effects on the variation of the Earth magnetic dipole and the position of the neutral sheet. It can be used to predict the occurrences of crossings of regions of plasma sheet electrons to support mission analysis for which a system would be, purposely or not, sensitive to such electrons. In this paper, the model is essentially applied to the prediction of the orbital environment of the XMM/Newton X-ray observatory for which plasma sheet electrons are expected to induce a background in X-ray detectors.

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